Spray nozzle



A. c. ROWLEY 2,434,721

SPRAY NOZZLE Jan. 20,1948.

Filed Feb. 25, 1946 Patented Jan. 20, 1943 SPRAY NOZZLE Arthur C. Rowley, Drexel Hill, Pa., assignor to Globe Automatic Sprinkler Company, Philadelphia, Pa., a corporation of Pennsylvania Application February 25, 1946, Serial No. 649,817

Claims. (Cl. 299-115) This invention relates to new and useful improvements in spray nozzles, and more particularly to spray nozzles for automatic sprinkler and like systems.

It is known that fires in general, and certain types of fires in particular, may be more effectively combatted and extinguished by the use of water in the form of a fog or very finely divided spray than by the use of the conventional type spray of a number of small streams of water, and the principal object of the present invention is :to provide a novel and improved nozzle which is constructed and arranged to produce an extremely finely divided spray or fog.

Another object of the invention is to provide a nozzle of the character set forth which may be employed effectively in automatic sprinkler systems and like installations.

A further object of the invention is to provide a novel and improved spray nozzle having the described features and characteristics which are of comparatively simplified and inexpensive construction and highly efficient and foolproof in operation and use.

These and other objects of the invention, and the various features and details of the construction and operation thereof, are hereinafter fully set forth and described with reference to the accompanying drawing, in which:

Fig. 1 is a plan view of the discharge end of a nozzle made according to the present invention.

Fig. 2 is an elevational view of the nozzle disclosed in Fig. 1.

Fig. 3 is an enlarged sectional view taken on line 3-3, Fig. 1.

Fig. 4 is a sectional view taken on line 44, Fig. 3; and

Fig. 5 is an enlarged fragmentary sectional view taken on line 5-5, Fig. 1.

Referring now to the drawing, a spray nozzle made according to the present invention is generally designated by reference numeral I and comprises a body 2 and a discharge tip 3. The body 2 includes inlet and outlet portions 4 and 5, respectively, between which there is provided an enlarged general spherical or bulbous portion 6. The discharge tip 3 is provided with an externally threaded skirt portion 1 of reduced diameter which is. screwed inwardly of the end of the outlet portion 5 of the body 2 as shown, and a suitable gasket 8 is interposed between the adjacent annular faces of the body 2 and tip 3 to provide a fluid-tight joint therebetween.

In the illustrated embodiment of the invention, the inlet portion 4 of the body 2 may be exerally conically shaped portion ternally threaded at its end as indicated at 9 for connection, for example, to the outlet pipe ID of a conventional sprinkler system. The inlet portion 4 also may be provided on its exterior with a hexagonal or similar portion l l adapted to receive a wrench or the like which may be employed to connect or disconnect the nozzle I from the pipe [0.

At its inner end the inlet portion 4 of the body 2 opens into a generally spherical chamber l2 which is contained within and defined by the enlarged bulbous body portion 6, and formed integrally with the body 2 and extending inwardly of this chamber l2 from the outlet side thereof is a partition structure comprising a cylindrical Wall portion I3 which terminates in a transverse end wall portion l4 that is disposed substantially centrally and crosswise of the chamber l2. Extending from this transverse end wall portion l4 coaxially of the body 2 through and beyond the outlet portion 5 thereof to a point adjacent the end of the discharge tip 3 is a genl5 which, together with the end wall [4, the cylindrical wall [3 and the outlet end portion 5 of the body :2, forms and defines within said body 2 an annular passage l6 which extends from the chamber I2 through the outlet portion 5 substantially to the discharge tip 3.

Communication from the chamber l2 to the annular passage I6 is provided by means of ports or openings I! and I8, respectively, formed in the wall portion l3 at diametrically opposite sides thereof and adjacent the transverse end wall Hi. These ports H and I8 are arranged as shown in Fig. 4 of the drawing so that water or other liquid passing therethrough from the chamber it into the annular passage l6 enters the latter in a direction substantially tangent thereto.

As best shown in Fig. 5 of the drawing, the outer end of the conically shaped portion I5 is provided with a radially extending flange portion 19, and the end face of said conical member I5 is counterbored as shown to provide therein a coaxial conical recess 20. A plurality of longitudinally extending ports or passages 2| are provided through the flanged and recessed end portion of the conical member I5 and these passages 2| are arranged circumferentially with respect to the member I5 at equally spaced intervals.

The end of the discharge tip 3 which lies in out wardly spaced relation with respect to the end of the conical member I5 is provided with a coaxial discharge opening 22 constructed and arranged, for example, as shown in the drawing and the diameter of this discharge opening 22 and the arrangement of the ports or passages 2! in the flanged outer end of the conical member l5 are such that the said several ports or passages 2| have their axes substantially in alignment with the inner edge 23 of the discharge opening 22 through the tip 3.

In operation of a spray nozzle constructed as herein described, Water or other liquid u'n'de'r pressure enters the chamber I2 of the body 2 through the inlet portion 4 thereof from the pipe 53,1

and then enters the annular passage l6 through the openings I! and IS in the Wall l3. Since the openings IT and I8 are disposed tangent tp the; passage I6, water or other liquidlfentering the latter is caused to traverse a spiral fpath of;

movement outwardly through the passage l6 toward the discharge end of the nozzle 'i.""A"s'the" water or other liquid reaches the end of the eon;

ical member I5, part thereof Will pass through the ports or passages 2l iriithe outer end; of the member while the'reniainder will pass about the outside or the 'flangeII'S anEl thenjinwardly to the discharge orifice 22 of the tip 3 between the end face of said flange l9 and the adjacent inner wall of't'he tip 3. I V H V in Since the water or other liquidsupplied to the nozzle l'is under pressure} the ports orpassages 2| in the flanged endportion of the conical member 15 functionin themannerlof jets or orifices to dischargethe water passing therethrough at through said outlet portion substantially to said discharge tip, said means having ports therein opening from said chamber to said annular passage substantially tangent thereto and having adjacent"said'discharge tip a plurality of axially 'eXt'en'difig dischar e openings disposed in arrangement corresponding to the configuration of the dischargeportof said tip with their axes substantially in alignment with the adjacent edge high velocity, and as theseports or passages 2i have their axes disposed substantially in alignment with the inner edge 23 of the tipdischarge opening 22, the jets of liquid discharging outr, wardly from the passages 2! at high velocity serve 1 to impingethe Water passing about the exterior of the flange l9 against the sharpinner edge 23 of the tip discharge opening 22 withithe result that the water is broken up-into -very finely di-' vided particles which discharge from the nozzlethrough the opening 2 3' in theformgof a very finely divided spray of the nature of a heavy'fog ormist.

From the foregoing description it will be apparent that the present -invention' provides novel and improved nozzle-,whichisoperable to produce an extremely finely divided spray orfog.

In addition, the invention providesafnozzle of the fog-producing type which may-be employed effectively in automatic sprinkler. systems and like installations and which is dfcornp'ara'tively simplified andinexpensive 'construction that is highly efficient and foolproof in operation 'and use. I

While a particular embodiment of the invention has been illustrated and clescril aedflie reinf' it is not intended to limit the invention-to such disclosure and changes and "modifications may t i, v. body member h v n c axia in et nd iou le be made therein and thereto ithe fs'cope' of the claims.

I claim: 1. A nozzle of the type described comprising a body having an inlet and an cameraman inter-- mediate chamber in open"communicationwith said in1et',a discharge'tip at 'theend'of Saidout let having a discharge port thereim'and means in saidbody providing an annu ar passage from said chamber through"saidf out etsubstamiany to said discharge tip, said means having ports therein opening froms'ai'd" chamber to said" an nular passage substantially tangent thereto and having a plurality 'of discharge openings" therein adjacent'said'discharge tip arranged with 't'heir 'of said discharge port in the tip.

3. A nozzle of the type described comprising a body member having an inlet and an outlet and an intermediate chamber in opencornmunication With said inlet,'a dischargetip at the {outlet of said body having a discharge port thereinja partition extending inwardly of said chamber from the outlet side thereof, a member extending from said partition outwardly through the-outlet por tion of said body substantially to said discharge f t p. said partitibn a a es mmi gr ro id nai said body an annular passage from/said chamber substantially to said dischargeitipysaidpartition having ports therein opening y from said; chamber to said annular pas sage substantially tangent thereto, and said member having in 'its outer end a plurality of axiallyextending ldischarge op'enings arranged with their axes substantially "in alignment with the adjacent edge-of lithe dis-f charge port in said tip.

and an intermediatechamber Ppen' commu ication with said inletga discharge'tip t'the Oiut i let of said body having "a 'discha'rgep ttherein; a side wall extending inwardly of fsaid harnlcqer from the outlet sidethereof land terminating in 4. A nozzle of the: type described comprising a body member having an inletj andjan outlet an end wall arranged 'tran'sverselji of'said Chain- 1 ber, a member extendingfrorn said 'endwall out wardly through the outlet of said body, said} side;

and end walls and said'member pro 'dingjnsaid" body n nee ng? rene stantially 'to said discharge' tip v I having ports therein opening from said chamber e ber $11105 to said annular passage substantially "tangent thereto, and'said member having iri itsiouter end a plurality of axially extending discharge Jbpen ings arranged with their axes substantially in alignment with the adjacentedge of the disch port in said tip 5. A nozzle of the type described con prisi tions and 7 an interme iatefportion defin chamber in open communication portion, a cylindricalvvall' ,extendih'gginwardly oi said side; wall it} "tn said inlet" said chamber from the ioutle t ;side 'jthereof and terminating in an end wall arranged"transversely 'j of said chamber, an outwardly taperefdflmember extending coaxial ly of" the b Lpdyfrorn sai'd'end Wall 1 through the outlet portion o f sai'd j body; Said 1 cylindrical and end' walls and said tapered mem ber defining within thefbodyjan' annular passage, said cylindrical wall having jpolftsi therein atdi ametrically opposite side's thereof adiacerit said end wall and openingifrorn saidchafiiber to said] annular passage substantially tangent thereto, a

flange at the outer end of said tapered member,

said flanged outer end of said tapered member REFERENCES CITED having therein a plurality of axially extending The following references are of record in the discharge ports arranged thereabout at equally file of this patent:

spaced intervals, and a discharge tip secured to 5 the outlet portion of said body having a coaxial UNITED STATES PATENTS discharge port therein, the discharge port in said Number Name D e tip having its edge spaced outwardly from the 579,873 Hitchcock et a1 30, 1397 flanged end of said tapered member and substan- 1,093,996 Kestnel P 19 4 tially in alignment with the axes of the axial dis- 10 1,315,765 Eckart S pt. 9, 1919 1,508,281 Kelley Sept. 9, 1924 charge ports therein.

ARTHUR c, ROWLEY, ,8 ,795 Boyd June 28, 1932 

